X-Git-Url: https://git.lyx.org/gitweb/?a=blobdiff_plain;f=src%2FLanguage.cpp;h=12c79a04193fa8964c7c3b69b1d0a25eb348d3eb;hb=1b6ce0e827d58258e84ba2bf0754c6b273b123db;hp=e588218047aea9c790753aa0d94b1a118188bd99;hpb=53a72a45266feb86c13f47615a4cbb15053f3c63;p=lyx.git

diff --git a/src/Language.cpp b/src/Language.cpp
index e588218047..12c79a0419 100644
--- a/src/Language.cpp
+++ b/src/Language.cpp
@@ -16,37 +16,112 @@
 #include "Language.h"
 
 #include "Encoding.h"
+#include "LaTeXFonts.h"
 #include "Lexer.h"
 #include "LyXRC.h"
 
 #include "support/debug.h"
 #include "support/FileName.h"
+#include "support/filetools.h"
+#include "support/lassert.h"
 #include "support/lstrings.h"
 #include "support/Messages.h"
 
 using namespace std;
 using namespace lyx::support;
 
-
 namespace lyx {
 
 Languages languages;
-Language ignore_lang;
-Language latex_lang;
-Language const * default_language;
-Language const * ignore_language = &ignore_lang;
-Language const * latex_language = &latex_lang;
+Language const * ignore_language = 0;
+Language const * default_language = 0;
+Language const * latex_language = 0;
 Language const * reset_language = 0;
 
 
+bool Language::isPolyglossiaExclusive() const
+{
+	return babel().empty() && !polyglossia().empty() && requires().empty();
+}
+
+
+bool Language::isBabelExclusive() const
+{
+	return !babel().empty() && polyglossia().empty() && requires().empty();
+}
+
+
+docstring const Language::translateLayout(string const & m) const
+{
+	if (m.empty())
+		return docstring();
+
+	if (!isAscii(m)) {
+		lyxerr << "Warning: not translating `" << m
+		       << "' because it is not pure ASCII.\n";
+		return from_utf8(m);
+	}
+
+	TranslationMap::const_iterator it = layoutTranslations_.find(m);
+	if (it != layoutTranslations_.end())
+		return it->second;
+
+	docstring t = from_ascii(m);
+	cleanTranslation(t);
+	return t;
+}
+
+
+string Language::fontenc(BufferParams const & params) const
+{
+	// Don't use LaTeX fonts, so just return the language's preferred
+	// (although this is not used with nonTeXFonts anyway).
+	if (params.useNonTeXFonts)
+		return fontenc_.front() == "ASCII" ? "T1" : fontenc_.front();
+
+	// Determine optimal font encoding
+	// We check whether the used rm font supports an encoding our language supports
+	LaTeXFont const & lf =
+		theLaTeXFonts().getLaTeXFont(from_ascii(params.fontsRoman()));
+	vector<string> const lfe = lf.fontencs();
+	for (auto & fe : fontenc_) {
+		// ASCII means: support all T* encodings plus OT1
+		if (fe == "ASCII") {
+			for (auto & afe : lfe) {
+				if (afe == "OT1" || prefixIs(afe, "T"))
+					// we found a suitable one; return that.
+					return afe;
+			}
+		}
+		// For other encodings, just check whether the font supports it
+		if (lf.hasFontenc(fe))
+			return fe;
+	}
+	// We did not find a suitable one; just take the first in the list,
+	// the priorized one (which is "T1" for ASCII).
+	return fontenc_.front() == "ASCII" ? "T1" : fontenc_.front();
+}
+
+
+string Language::dateFormat(size_t i) const
+{
+	if (i > dateformats_.size())
+		return string();
+	return dateformats_.at(i);
+}
+
+
 bool Language::readLanguage(Lexer & lex)
 {
 	enum LanguageTags {
 		LA_AS_BABELOPTS = 1,
 		LA_BABELNAME,
+		LA_DATEFORMATS,
 		LA_ENCODING,
 		LA_END,
+		LA_FONTENC,
 		LA_GUINAME,
+		LA_HAS_GUI_SUPPORT,
 		LA_INTERNAL_ENC,
 		LA_LANG_CODE,
 		LA_LANG_VARIETY,
@@ -54,6 +129,9 @@ bool Language::readLanguage(Lexer & lex)
 		LA_POLYGLOSSIAOPTS,
 		LA_POSTBABELPREAMBLE,
 		LA_PREBABELPREAMBLE,
+		LA_PROVIDES,
+		LA_REQUIRES,
+		LA_QUOTESTYLE,
 		LA_RTL
 	};
 
@@ -61,9 +139,12 @@ bool Language::readLanguage(Lexer & lex)
 	LexerKeyword languageTags[] = {
 		{ "asbabeloptions",       LA_AS_BABELOPTS },
 		{ "babelname",            LA_BABELNAME },
+		{ "dateformats",          LA_DATEFORMATS },
 		{ "encoding",             LA_ENCODING },
 		{ "end",                  LA_END },
+		{ "fontencoding",         LA_FONTENC },
 		{ "guiname",              LA_GUINAME },
+		{ "hasguisupport",        LA_HAS_GUI_SUPPORT },
 		{ "internalencoding",     LA_INTERNAL_ENC },
 		{ "langcode",             LA_LANG_CODE },
 		{ "langvariety",          LA_LANG_VARIETY },
@@ -71,6 +152,9 @@ bool Language::readLanguage(Lexer & lex)
 		{ "polyglossiaopts",      LA_POLYGLOSSIAOPTS },
 		{ "postbabelpreamble",    LA_POSTBABELPREAMBLE },
 		{ "prebabelpreamble",     LA_PREBABELPREAMBLE },
+		{ "provides",             LA_PROVIDES },
+		{ "quotestyle",           LA_QUOTESTYLE },
+		{ "requires",             LA_REQUIRES },
 		{ "rtl",                  LA_RTL }
 	};
 
@@ -90,7 +174,7 @@ bool Language::readLanguage(Lexer & lex)
 			error = true;
 			continue;
 
-		default: 
+		default:
 			break;
 		}
 		switch (static_cast<LanguageTags>(le)) {
@@ -109,12 +193,32 @@ bool Language::readLanguage(Lexer & lex)
 		case LA_POLYGLOSSIAOPTS:
 			lex >> polyglossia_opts_;
 			break;
+		case LA_QUOTESTYLE:
+			lex >> quote_style_;
+			break;
 		case LA_ENCODING:
 			lex >> encodingStr_;
 			break;
+		case LA_FONTENC: {
+			lex.eatLine();
+			vector<string> const fe =
+				getVectorFromString(lex.getString(true), "|");
+			fontenc_.insert(fontenc_.end(), fe.begin(), fe.end());
+			break;
+		}
+		case LA_DATEFORMATS: {
+			lex.eatLine();
+			vector<string> const df =
+				getVectorFromString(trim(lex.getString(true), "\""), "|");
+			dateformats_.insert(dateformats_.end(), df.begin(), df.end());
+			break;
+		}
 		case LA_GUINAME:
 			lex >> display_;
 			break;
+		case LA_HAS_GUI_SUPPORT:
+			lex >> has_gui_support_;
+			break;
 		case LA_INTERNAL_ENC:
 			lex >> internal_enc_;
 			break;
@@ -126,11 +230,17 @@ bool Language::readLanguage(Lexer & lex)
 			break;
 		case LA_POSTBABELPREAMBLE:
 			babel_postsettings_ =
-				lex.getLongString("EndPostBabelPreamble");
+				lex.getLongString(from_ascii("EndPostBabelPreamble"));
 			break;
 		case LA_PREBABELPREAMBLE:
 			babel_presettings_ =
-				lex.getLongString("EndPreBabelPreamble");
+				lex.getLongString(from_ascii("EndPreBabelPreamble"));
+			break;
+		case LA_REQUIRES:
+			lex >> requires_;
+			break;
+		case LA_PROVIDES:
+			lex >> provides_;
 			break;
 		case LA_RTL:
 			lex >> rightToLeft_;
@@ -166,13 +276,28 @@ bool Language::read(Lexer & lex)
 		encoding_ = encodings.fromLyXName("iso8859-1");
 		LYXERR0("Unknown encoding " << encodingStr_);
 	}
-	// cache translation status. Calling getMessages() directly in
-	// PrefLanguage::PrefLanguage() did only work if the gui language
-	// was set to auto (otherwise all languages would be marked as available).
-	translated_ = getMessages(code()).available();
+	if (fontenc_.empty())
+		fontenc_.push_back("ASCII");
+	if (dateformats_.empty()) {
+		dateformats_.push_back("MMMM dd, yyyy");
+		dateformats_.push_back("MMM dd, yyyy");
+		dateformats_.push_back("M/d/yyyy");
+	}
 	return true;
 }
 
+
+void Language::readLayoutTranslations(Language::TranslationMap const & trans, bool replace)
+{
+	TranslationMap::const_iterator const end = trans.end();
+	for (TranslationMap::const_iterator it = trans.begin(); it != end; ++it) {
+		if (replace
+			|| layoutTranslations_.find(it->first) == layoutTranslations_.end())
+			layoutTranslations_[it->first] = it->second;
+	}
+}
+
+
 void Languages::read(FileName const & filename)
 {
 	Lexer lex;
@@ -195,23 +320,149 @@ void Languages::read(FileName const & filename)
 		l.read(lex);
 		if (!lex)
 			break;
-		if (l.lang() == "latex")
-			latex_lang = l;
-		else if (l.lang() == "ignore")
-			ignore_lang = l;
-		else
+		if (l.lang() == "latex") {
+			// Check if latex language was not already defined.
+			LASSERT(latex_language == 0, continue);
+			static const Language latex_lang = l;
+			latex_language = &latex_lang;
+		} else if (l.lang() == "ignore") {
+			// Check if ignore language was not already defined.
+			LASSERT(ignore_language == 0, continue);
+			static const Language ignore_lang = l;
+			ignore_language = &ignore_lang;
+		} else
 			languagelist[l.lang()] = l;
 	}
 
-	default_language = getLanguage(lyxrc.default_language);
+	default_language = getLanguage("english");
 	if (!default_language) {
-		LYXERR0("Default language \"" << lyxrc.default_language
-		       << "\" not found!");
-		default_language = getLanguage("english");
-		if (!default_language)
-			default_language = &(*languagelist.begin()).second;
+		LYXERR0("Default language \"english\" not found!");
+		default_language = &(*languagelist.begin()).second;
 		LYXERR0("Using \"" << default_language->lang() << "\" instead!");
 	}
+
+	// Read layout translations
+	FileName const path = libFileSearch(string(), "layouttranslations");
+	readLayoutTranslations(path);
+}
+
+
+namespace {
+
+bool readTranslations(Lexer & lex, Language::TranslationMap & trans)
+{
+	while (lex.isOK()) {
+		if (lex.checkFor("End"))
+			break;
+		if (!lex.next(true))
+			return false;
+		string const key = lex.getString();
+		if (!lex.next(true))
+			return false;
+		docstring const val = lex.getDocString();
+		trans[key] = val;
+	}
+	return true;
+}
+
+
+enum Match {
+	NoMatch,
+	ApproximateMatch,
+	ExactMatch
+};
+
+
+Match match(string const & code, Language const & lang)
+{
+	// we need to mimic gettext: code can be a two-letter code, which
+	// should match all variants, e.g. "de" should match "de_DE",
+	// "de_AT" etc.
+	// special case for chinese:
+	// simplified  => code == "zh_CN", langcode == "zh_CN"
+	// traditional => code == "zh_TW", langcode == "zh_CN"
+	string const variety = lang.variety();
+	string const langcode = variety.empty() ?
+	                        lang.code() : lang.code() + '_' + variety;
+	string const name = lang.lang();
+	if ((code == langcode && name != "chinese-traditional")
+		|| (code == "zh_TW"  && name == "chinese-traditional"))
+		return ExactMatch;
+	if ((code.size() == 2) && (langcode.size() > 2)
+		&& (code + '_' == langcode.substr(0, 3)))
+		return ApproximateMatch;
+	return NoMatch;
+}
+
+} // namespace
+
+
+
+Language const * Languages::getFromCode(string const & code) const
+{
+	LanguageList::const_iterator const lbeg = languagelist.begin();
+	LanguageList::const_iterator const lend = languagelist.end();
+	// Try for exact match first
+	for (LanguageList::const_iterator lit = lbeg; lit != lend; ++lit) {
+		if (match(code, lit->second) == ExactMatch)
+			return &lit->second;
+	}
+	// If not found, look for lang prefix (without country) instead
+	for (LanguageList::const_iterator lit = lbeg; lit != lend; ++lit) {
+		if (match(code, lit->second) == ApproximateMatch)
+			return &lit->second;
+	}
+	LYXERR0("Unknown language `" + code + "'");
+	return 0;
+}
+
+
+void Languages::readLayoutTranslations(support::FileName const & filename)
+{
+	Lexer lex;
+	lex.setFile(filename);
+	lex.setContext("Languages::read");
+
+	// 1) read all translations (exact and approximate matches) into trans
+	typedef std::map<string, Language::TranslationMap> TransMap;
+	TransMap trans;
+	LanguageList::iterator const lbeg = languagelist.begin();
+	LanguageList::iterator const lend = languagelist.end();
+	while (lex.isOK()) {
+		if (!lex.checkFor("Translation")) {
+			if (lex.isOK())
+				lex.printError("Unknown layout translation tag `$$Token'");
+			break;
+		}
+		if (!lex.next(true))
+			break;
+		string const code = lex.getString();
+		bool found = getFromCode(code);
+		if (!found) {
+			lex.printError("Unknown language `" + code + "'");
+			break;
+		}
+		if (!readTranslations(lex, trans[code])) {
+			lex.printError("Could not read layout translations for language `"
+				+ code + "'");
+			break;
+		}
+	}
+
+	// 2) merge all translations into the languages
+	// exact translations overwrite approximate ones
+	TransMap::const_iterator const tbeg = trans.begin();
+	TransMap::const_iterator const tend = trans.end();
+	for (TransMap::const_iterator tit = tbeg; tit != tend; ++tit) {
+		for (LanguageList::iterator lit = lbeg; lit != lend; ++lit) {
+			Match const m = match(tit->first, lit->second);
+			if (m == NoMatch)
+				continue;
+			lit->second.readLayoutTranslations(tit->second,
+			                                   m == ExactMatch);
+		}
+	}
+
 }